Automatic clutch and brake.



Nm ees,-eso.' Patented Deb. n, I900 a. JULIAN.

AUTDMATIC GLUTCHAND BRAKE.

(Application filed 'Apr. 19, 1900.)

(no Model.)

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TNEEEES.

p v U ITEDTSTATES" PATENT OFF-It:

. GIDEON JULIAN, on BOSTON, MASSACHUSETTS, ASSIGNOR TeeEeR-ee H1 P,

- FLnee, OF SAME PLACE.

AUTOMATIC'CLUTGH AND-BRAKE.

SPECIFICATION formingpart of Letters Patent No. 663,630, dated December 11,1900.

Application l April 2, 1

' To all whom, it nwty concern:

Be it known that I, GIDEON JULIAN, of Bose ton, inthe county of Suffolk and State of Massachusetts, have invented certain new and 5 useful Improvements in Automatic Clutches and Brakes, of which the following is a specification.

This invention relates to mechanism for connecting a driving device, such as a belt- 10. pulley, to or releasing it from the shaft to.

l which it imparts motion and forarresting the a movement of said shaft after its disconnection'from the pulley. v

The invention has for its objects to provide an improved form of brakefor arresting the movement of the shaft and also improved de- -.vices for throwing olf'the clutch and setting thebrak'e. r r

' To these ends the invention consists in zo'certain novel features of construction andarrang'ement whi eh I shall now proceedto describe and claim. r

Of theacconipanying drawings, Figure 1 represents a plan view, partly in section, of

l 25 'a shaft-controlling mechanism constructed in accordance with my invention. Fig. 2 rep resents a section on line 2 2 of Fig. ,1. Fig. '3 represents. a section on line 3 3 of Fig. 1. Figs. 4 to 8, inclusive, represent detail views in elevation and section showing two members of the clutch-actuating mechanism.

The same reference characters indicate the sameparts in all the figures. I Referring to the drawings, 1 designates'a "power-driven shaft having a belt-pulley 2 loosely mounted on it andprovided with a clutch member and a c'omplemental clutch member 3, splined to and movable longitudiually of the shaftinto and out of engagement with the pulley-clutch member.

4 5 are fixed bearings for-the shaft 1, and I6 is a collar loosely mounted on the shaft and adapted by longitudinal movement to force ;the clutchumember 3 into engagement with the clutch member on the pulley 2, so as to cause themember-3 and the shaft to be rotated without. the collar itself being rotated "by the member 3. Longitudinal movement of the collar 6 is produced by imparting to it :a partial rotation, this rotation acting to more a strut 7, w ich 1s interposed between boarsenei No. 12,526. (in model.)

ing 5 and the collar 6 and is held by notches -l11 said parts either into a diagonal position or into a longitudinal position. The collard is connected by a yoke 8 with asecond collar 9, loosely mounted on the shaft 1 and having a gear-segment '10, which meshes with a second'gear-segment l1 ona sleeve 12, which is loosely supported by a fixed pintle 13. "Also formed-onsleeve 12 are two abutments 11 14:, 6o

,separated by a space in which operates a lug 15, formed on the hub ofa hand-lever 16, whichis supported by pintle'13.

17 is a brake-dru m formed on or attached to the shaft 1, and 18 is an opposed braking memher or shoe having two side arms 19 19 which loosely surround the shaft 1. The inner sur face of said braking member forms a contracted throat with the periphery of drum 19, as shown in Fig. 3, and in said throatoper- 7o ates a roller-wedge 20, carried by the inner end of operatinglever 16. To compensate for the different arcs of movement "of le- "ver 16 and roll 20, the trnnnions 21 ofsaid roll are journaledflin transverseslo ts 22 in 7 5 the lever "16, so as to permit a bodilytransverse movement of the roll with respect to the lever. The rotation of the shaft 1 being in the direction of the arrow in Fig. 3, if the wedging-roll 20 be forced into the contracted 8o throat between brake-drum 1'7 and,braking member 18 it will tend to arrest the rotation of said brake-drum and the shaft 1. The

braking member 18 is also permittedtohave a limited rotary movement with the drum 17 when the braking action takes place, which movement is resisted by a spring 23. The reverse 'movement of the member 18 is limit-ed by an adjustable check-stud 2t, mounted in the machine-frame. By means of aspring 9o the inner end of lever 1o tends to become depressed, so as to move the we'dging roH 20" into the contracted throat between drum l7- and member 18. To prevent this increment of, the lever except at a predetermined time, I- provide a cam-wheel 25, secured to a counter-shaft- 26, which is rotated by a pinion 27 and gear 28 upon the shaft 1 andhaving a notch 29 at a point in its periphery, the remaining portion of said periphery being con-10o centric with the wheel-axis.

30' is a dog formed on the hub of operating- 18. 'When, however," the dog 30-is in the notch 29, the operating-lever-oscillates, so as to movethe wedgingi-roll into the said throat and set the brake. The cam-wheel 'is also provided at a point on its rim witha later ally-projecting pin or tripper 31, adapted to come in contact with an abutment 32 011 sleevev 12, whereby said sleeve is oscillated and the clutch members re1eased,the arran gement being, preferably, such that pin 31 will operate on abument operates on dog 30. Snflicieht free play is allowe'd between 'lu'g 15 and abutments 14 14 to permit the clutch to setting the brake.

When the shaft S1 is 'to beset in motion,

' the outer elndfof' hand-lever 16Iis depressed.

i a This movement will first throw ofi the brake and will then set the clutch throug'h'the c0-- 7 x-ac'tion of'lug' 15 and the lower one ofthe two abutments 14, so as toconnect the shaft 1 with the-driving-pnlley' 2. The rotation of the shaft continues until pin '81 reaches abutni ent 32, when the clutch is automatically released." The momentum of the parts with which the shaft is connectedwill supposedly be sufficient to continue the rotation of said shaft lintil notch 29 reaches dog 30, .where-' upon the brake will 'be automatically set and the rotation of the shaft arrested.

shaft 1 completes a defin'itennmber OfliOhdtions to one rotation of the-cam-wheel 25. The hraking movementoccn rs grad nally and withbut shock. The spring 23 serve'sto prevent any violentshock or jar and alsoacts by its recoil to givethe shaft a partial" bacl nv'ard 'rotation after the arrest of its forward rotation,

' sole-trimn'iing knife around the edge of a sole, the saidbackward rotation moving! the knifebackward a short distance flOlllfhG pointwhereit was stopped byl'the arrest of the forward 'rotationof the shaft. The knife is thereby enabled to pass by the point'i'vhere it normally stops in order that there may be" no liability of leaving a portion of the sole untrimmcd at or about the end of the stroke.

I claim L 'Ihe-cOmbinat i n of a br-ake-drum'andi means to rotate the same, an opposed braking niember for'ming a contracted throatwitl-l the periphery of said drn-m,.a wedging member operatin gin said throatand adapted to arrest the rotation of the drum when forced :be-

' 'tween said drum and the opposed braking -1nemb.er,- said :wedging'; member being normally retracted from-the throat, anda device qnntrollcd by thedrnm rotating means and 02 before notch 29' be throw-heft without The lation of the gears 27 28 maybe such'that the a result that ishseful when myinvention is. used in a sole-roundingmachine, inwhichthe' shaft 1 is geared to mechanism that impels a 3. The combination of a brake-drum and means to rotate the same, an opposed braking member forminqa contracted throat with the peripheryof said drum, a wedging member i ope'rating in said throat and'adapted to arrest the rotation of the drum when forced betwee I said drum and the opposed 'braking member, a dog connected with the wedging member iand movable to project the same into the throat or to retract it therefrom, and a cam rotated by the dru m-rotating means and con--' trolling said dog.

4. The combinatlon of a brake-drum and means torotatethe same, an opposed braking member forming a contracted throat with the periphery, of said drum and mounted for a limited rotary movement-with the drum,-a -\vedging member operating in saidthroat and adapted to arres t the rotation of the drum when forced between said drum-and the opposedbraking member and to impart a rotary -niovement to said braking member when so forced, and a spring yieldingly opposing the said rotary movement of the braking member.

5. The combination of a rotaryshaft, means to drive the same, a clutch adapted toconne'ct-said shaft with and disconnect it from the driving means, a brake adapted toarre'stthe rotation of the shaft, a member movable toset the brake, a device independently movable to throw 0E theclutch, and means rotat'ed by. the shaft and arrangedto separately actuate said device and said member.

6. The combination of a rotary shaft, means todrive the sam'ega clutch adapted to connect said shaft with and disconnectit from the driving means, a-brake adapted to arrest movable to throw the brake into and out of action, a device actuated .by said lever to throw the clutchon and on, said device hav- 'ingaclntch-releasing'movementindependent of the lever, and means rotated by theshaft and arranged to separately actuate said lever and-said device to throw off the clutch and set the brake.

'7. The'combination of a rotary shaft, means to'drive the same,-a clutch adapted to connect said shaft with and disconnect it from the driving means, a brake adapted to arrest t-herotation 0f the shaft, an operating-lever movable tothrow the brake into and out of the rotation of the shaft, an operating-lever ;-action, "a-device actuated by said lever to of the lever,- anda' counter-shaft rotated from said lever to set thebrake.

' and shaft when forced between said drum to drive :the same, a clutch adapted toeonf .neet said shaft with and disconnect it from the driving means,

throw the clutch on and off; said device having a. clutch-releasing movement independent the-first said shaft and. havinga trip adapted to actuate said deviceto throw ofi theelnteh and a cam adapted. to independently actuate 8; The combination of arotaryshaft', means to drive the same, a clutch adapted to conand the opposed braking member. v I .9. The combination of a rotary shaft, means formingia contraeted throat with neat said shaft with and disconnect it from the driving means, a brake-drum connected with the shaft, an opposed braking member ery of the drum, an operating-levereonltreiling the clutch and having'awedging member movable into an'd out of said throatand the periph adapted to arrest the rotation of. the drum and shaft when .foreed between-saidldrum and the opposed br'aking member, said lever having a dog, and a cam rotated by the shaft and eoaetin'g with said dog" to oscillate the lever and move the wedging member-into and ont of the throat. V

In testimony whereof I have aflixed nature in presence of two witnesses.

Witnesses:

Gr. MALEY, O. F. BROWN.

my sig+ eIDEoN JULiAN. 

